#include <stdio.h>
void main()
{
unsigned width , precision;
int number = 256 ;
double weigth = 243.5;
printf("what field width \n");
scanf("%d",&width);
printf("the num ber is : %*d:\n",width,number);
printf("now enter a width and a precision \n");
scanf("%d %d",&width,&precision);
printf("weight = %*.*f\n",width,precision,weigth);
}